Resonator construction



E. c. HORTONET AL 1,841,534

RESONATOR CONSTRUCTION Filed Nov. 17, 1950 rw'm C, Itormn, mum Jiueber,

Patented Jan. 19, 1932.

UNITED. STATES- PATENT; OFFICE- snwm daemon, or names, up may wanna, or BUFFALQ, NEW You, assrenoas 'ro rmco rnonncrs coaromnon, or BUFFALO, new YORK misona'roa consrmicrron Application filed Noyember 17, mo. Serial 1 m. 496,308.

This invention relates todevices for emit-- ting warning notes orsignals, and primarily to such devices of the horn type as are ada ted 'for use on automobiles, boats and 0t er vehicles. v

The invention resides in the structural form and manner of formation of the trumpet or sound amplifying and directing portion of the horn, which is adapted to be used in connection with electric or fluid pressure sound gene-rating mechanism and is particularly adapted for-use in conjunction with such mechanism of the type disclosed in our pending application Serial No. 486,228, filed October 3, 1930, in which a sound-generating valve is alternately drawn away from and pressed against a scat by the combined actions of suction and spring pressure. The trumpet structure contemplated by this invention is adapted to modify and direct the oscillations or sound Waves; induced in the air column therein by the sound generating mechanism. The trumpet partsa're of light sheet material which may be readily stamped to shape thus permitting of very economical manufacture.

These and other objects and advanta es will become apparent from the following e- .scriptionof a typical device embodying the principles of the invention, reference being made to the accompanying drawings wherein a Fig. 1 is a side elevational view showing the trumpet of the present invention horn as sembly; and

Fig. 2 is an enlarged perspective sectional:

1 view taken along line- 2-2 of Fig. 1.

As-shown in'Fig. 1- the horn comprises a sound box or casing 10, which contains sound creating means which may be similar to those disclosed in our co-pendingapplication here inbefore referred to and which-may beactuated by fluid of less-than-atmospheric pres-v in the suction line 11. It is to be understood,;however,- that other sound generating means of the'mechanical, electrical, or fluid pressure; actuated types may be .mounted in the casing 10. The latter has an open tubular por ion 12 extending forwardly ereof, into which is pressed'the small tub ar end 13 of light weight and the resonator ortrumpet member desi nated generally at 14. The trumpet is ormed of a pair 'ofsubstantially similar but reversed sheet or plate stampings 15, each having a serpentine or S-shap'ed trough or corrugation 16 stamped therein. These deformations are preferably of semi-circular crosssection, increasing in radius from the small ends 13 to the opposite or enlarged trough other to form-an S-shaped trumpet passage;

19 of increasing diameter-from the end 13 to the end 17 The passage is completely closed except at the ends thereof, each plate extending beyond the trough edges to provide comparatively wide flange or edge portions 21 for closely abutting similar edge portions of the other plate, thus sealing the passage 19, except at its ends, against the outside atmosphere. The reduced end 13 of the trumpet.

14 is not' provided with such flange portions 21, this end comprising only; the de- 23 at its formed or trough-shaped portions 16 which forward enlarged end, has its reduced end 241 pressed into or otherwise secured to the trumpet conduit and 17. This bell is preferably spun from a single sheet, although it may be stamped. or otherwise formed from' other material.

It will be understood that the trumpet parts 15 may be secured together by other means than welding, and thatvarious means may beutilized for. securing these parts to the bell 22 and sound box 10.- It will further be understood that" the structure described is merely exemplary of the principles of the invention ,and may be variously modified within the scope of the invention which is intended to be commensurate with the app ded claims.

v at is claimed is:

1. A horn comprising a sound box, a

. end of the bell being flush with said adjacent.

. j trumpet member having a tubular end portion engaging said sound box in telescoped relation, said trumpet comprising a pair of complementary sections each having a continuous deformation therein, said deformations together defining a continuous passage extending from said end portion to another portion of said trumpet member, and a bell attached in telescoped relationship to said trumpet member at said another portion thereof.

2. A trumpet member for a horn compris ing a pair of plates having portions of their adjacent faces in contact, at least one of said plates having a continuous deformation therein, the material of said deformation cooperating with the adjacent portions of the other plate to define a continuous trumpet passa e, said passage at one end being enlarge with respect to adjacent portions of the passage, a bell telescoped Within the enlarged portion of the passage, the telescoped portions of the passage and providing a con-- tinuation of the trumpet passage.

3. A trum et member for a horn comprisi in a pair 0 plates having portions of their adjacent faces in contact, said plates having deformations thereon cooperating to provide a trumpet passage, one end of said passage being enlarged and being separated from the adjacent portion of the passage by a shoulder, and a bell telescoped within said end of the passage and abutting said shoulder, the walls of said bell being of thickness correspon g to the depth of the shoulder to provide a continuous passage through the bell and said deformations cooperating [(30 plates. I

4. In a trum et for horns, dispdsed side having a continuous deformation of S-shaped terminating at opposite" sides of the plates, rovide a continuous trumpet passage of -shape hlzlivin its'ends opening at opposite sides of t e p a y 5. A trumpet for horns comprising a pair of complementary plates each having a proa pair of plates -jection at one side thereof, said plates having complementary grooves formed therein to provide a sound passa e opening-at marginal ortions of the plates, said grooves extending through the projections, whereby the latter complement each other to form a tubular extension from the body of the trumpet.

- ERWIN C. HORTON. HENRY I-IUEBER.

y side, each of said plates 

